A portable handheld computing device has a notification system that alerts a user of an event regardless of whether the device is on or off. The notification system has a notification mechanism that is activated upon occurrence of the event and remains active until the user acknowledges the activated...http://www.google.fr/patents/US6374276?utm_source=gb-gplus-shareBrevet US6374276 - Handheld computing device with external notification system
Handheld computing device with external notification system
